Searching JuliaCon video about finding bifurcations in images

I am new to Julia and had a look at many of the amazing videos of JuliaCon. Thank you for that!

I remember that I have seen a video about finding bifurcation in images. The speaker said that he had an x-times improvement to some earlier/other code, but then heard from someone else that this doesn’t say anything. He should have a look at “clock cycles” (or similar) and there still was plenty room for improvement. Then he showed there was plenty of room for improvement and guided on those.

Does anybody know about which talk I am speaking and could share the link?